KR19990074375A - Digital Subscriber Call Processing Method in Remote Subscriber Module of Electronic Switching System - Google Patents

Abstract

The present invention relates to a method for processing a call so that a small digital subscriber of a remote module can communicate with a home exchange in an electronic switching center.

A digital subscriber calling signal processing method of a remote subscriber module of a switching system for matching a remote subscriber module and a switch mother station by a link,

When the digital subscriber picks up the telephone receiver of the telephone and requests a call setup with the ASP by formatting the LAMP protocol according to the LAPD protocol, and when the call setup request is made, between the digital subscriber's telephone and the subscriber of the home country. Connecting the channel, connecting the channel, sending a call progress notification message from the ASP to the RSMP, translating the called number, and connecting the call; and when the call is connected, the called subscriber of the home country hooks off the phone. When answering, it consists of forming a call.

Description

Digital Subscriber Call Processing Method in Remote Subscriber Module of Electronic Switching System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic switchboard, and more particularly, to a method for processing a call so that a small digital subscriber can communicate with a home office switch.

The electronic switching system performs call service to remote subscriber groups as well as to remote subscriber groups. The mobile station directly performs a call connection service for the subscriber group in the short distance, and installs a Remote Subscriber Module (RSM) in the remote subscriber group there and connects the relay link with the home station. Perform a connection service. However, the conventional all-electronic switching system is applied only to the call processing of the analog subscriber in the remote, the call processing of the digital subscriber serviced in the local exchange was not performed. This not only does not provide high quality communication services to small subscribers scattered throughout the country, but also does not effectively accommodate the spread of data communication subscribers.

Accordingly, an object of the present invention is to provide a method for processing a call to enable a digital communication service of a small subscriber connected to a remote local exchange in a switching system.

1 is a block diagram of an all-electronic exchange system configured by matching a host station and a host station with a link according to an embodiment of the present invention.

2 is a flowchart illustrating an outgoing signal processing control procedure of a digital subscriber in a local station (RSM) according to an embodiment of the present invention.

3 is a flowchart illustrating an incoming call processing control procedure of a digital subscriber in an RSM according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention, such as specific processing flows. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted. Also, in describing the drawings, like reference numerals refer to the same elements as much as possible even though they are shown on different drawings. Was made the same. It should be noted, however, that different reference numerals have been added to those components whose functions differ from those of the prior art.

1 is a block diagram of an all-electronic exchange system configured by matching a host station and a host station with a link according to the present invention.

Referring to FIG. 1, a block diagram of an electronic switch system in which a host station (Host) and a local station (RSM) are matched by a link is configured. The linkage between the mother station and the local station (RSM) is performed through a data link. Inter Processor Communication (IPC) communication, which includes not only data required for call processing, but also alarm messages generated by the RSM and test-related messages for maintenance of RSM subscribers. The components of the electronic switch system are largely the time switching link (TLS) 24, the data link interface (DLI) 18, the dual tone multi-frequency receiver (DTMFR) 26, and the remote subscriber interface processor (RSIP) 20. , Access Switching Processor (ASP) 22, Remote Subscriber Module Processor (RSMP) 10, Data Link Channel (DLC) 12, Analog Subscriber Interface (ASI) 14, Bit Rate Interface (28), Test Equipment Control (TEC) 30, Ring Generator (RG) 32, and Data Link Interface (DLI) 16. Explaining the role of each component in detail, RSMP 10 controls the remote subscriber device, link, test equipment, and call processing, detects when the subscriber hooks off, occupies DLC 12, and uses this information to use LAP-D protocol. Report to ASP 22 via RSIP 20 in your home country. Upon receiving the hookoff information, the ASP 22 connects the dial tone to the corresponding voice channel so that the subscriber can dial the call. The Access Switching Processor (ASP) 22 is the main processor that manages the operation and maintenance inside the home country. Time Switching Link (TSL) 24 performs all the switching functions in the home country. Within the RSM is a test equipment TEC (Test Equipment Control) 30 and a ring feeder RG (Ring Generator) 32. DLC 12 connects a Congestion Tone (C.T) to the subscriber when the trunk with the home station is occupied or broken. In addition, the main device of the system is a redundant structure to improve the reliability. In this way, RSM introduces the concept of separating the home subscribers into remote locations to emphasize economics while providing the same functions as the home subscribers. Referring to Figure 2 will be described in detail the matching structure of the RSM and the mother station. A block diagram showing the matching structure between a host and a host (RSM) .Two subprocessors out of four subprocessors controlled by ASS-S / T (Access Switching Subsystem for Subscriber / Trunk) are trunk matching. The remaining two subprocessors can be used as either a domestic subscriber matching processor (ASIP) or RSM matching processor (RSIP) 20. The RSIP 20 may have an ASI matching function and an RSM matching function, and the data between the RSIP 20 and the RSM is LAP- various IPCs required for call processing, testing, and maintenance using a data link of channel 16 of the PCM transmission line. Send / receive with D protocol.

2 is a flowchart illustrating an outgoing signal processing control procedure of a digital subscriber in a local station (RSM) according to an embodiment of the present invention.

3 is a flowchart illustrating an incoming call processing control procedure of a digital subscriber in a local station (RSM) according to an embodiment of the present invention.

1 to 3 will be described in detail the operation of the preferred embodiment of the present invention.

Now, with reference to the flowchart of FIG. 2, when the originating signal processing operation of the digital subscriber of the home station (RSM) is described, the call setup message is applied to the BRI 28 from the calling terminal by the remote subscriber, and the BRI 28 receives the call setup message. In step 101, RSMP 10 formats this information for the LAPD protocol and transmits the information to RSIP 20 through DLI 16 and 18. Then, RSIP 20 transmits a call setup request signal to the higher processor ASP 22 (step 102), and ASP 22 analyzes this information and transmits a call setup confirmation message to RSMP 10 through RSIP 20 if the subscriber is implemented. In step 103, the host processor ASP 22 allocates a channel and sends a channel connection request signal to RSMP 10 through RSIP 20 to provide a dial tone to the subscriber (step 104). The call setup response signal is transmitted (step 105), and the corresponding channel is connected through the DLC (aggregator) 16. In this case, when the first incoming information is received from the digital subscriber telephone in RSMP 10 (step 106), RSMP 20 transmits the incoming information 109 to ASP 22 through RSIP 20, and ASP 22 disconnects the connected dial tone. After that, the incoming information is processed in the same way. Upon receiving the last incoming information (step 108), the RSMP 20 transmits the incoming information to the higher processor ASP 22. (109) The ASP 22 transmits the call progress notification signal to the RSMP 10. In step 110, RSMP 20 sends a call progress signal to the digital subscriber's phone (step 111). Then, ASP 22 notifies RSMP 10 that it is busy (step 112). Notify that the call is being made to the digital subscriber phone (step 113). In addition, the ASP 22 notifies the call connection to the RSMP 10 when the call is connected (step 114). The digital subscriber transmits a connection confirmation signal to RSMP 10 (step 116). At this time, RSMP 10 receives the connection confirmation signal and transmits it to ASP 22 through RSIP 20. In this way, the digital subscriber connected to the mother station (RSM) performs the call, and when the digital subscriber terminates the call and transmits the call disconnection signal to the RSMP (step 118), RSMP 10 sends the disconnect request signal to the ASP 22 through RSIP 20. (Step 119) At this time, ASP 22 notifies the call release to RSMP 10 through RSIP 20 (step 120) and sends a channel release request signal (step 121). Then, RSMP 10 sends a channel release signal to the digital subscriber phone. In step 122, the digital subscriber telephone transmits a release completion signal to RSMP 10. In step 123, the RSMP 10 sends a release completion confirmation signal to the ASP 22 through RSIP 20 to free the digital subscriber.

In addition, referring to FIG. 3, a processing request for a call received from a host station to a digital subscriber connected to a local station will first be described. When a request for recommendation is received from the ASP 22 from RSMP 10 through RSIP 20, the RSMP 10 receives a digital subscriber. The call establishment message is transmitted to the telephone (step 126). In this case, the digital subscriber telephone sends the in-call message to RSMP 10 (step 127). In RSMP 10, the in-call notification message is sent to the ASP 22 through RSIP 20. The digital subscriber telephone notifies that the call is connected to RSMP 10 (step 129). Then, RSMP 10 notifies that the call is connected to ASP 22 through RSIP 20. At this time, the ASP 22 sends a call connection confirmation message to RSMP 10 through RSIP 20. In RSMP 10, the call connection confirmation message is sent back to the digital subscriber phone to transition to the busy state.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention provides a digital communication service capable of various terminals and services even in a rural and rural area in which small subscribers are scattered by simultaneously performing a call processing of an analog subscriber and a digital subscriber to a remote subscriber connected to a mother country. It can work. In addition, there is an advantage that the digital communication service, which is serviced at the national exchange in a large city, can be provided in the rural and fishing villages, while enabling data communication at the same time without additional line expansion.

Claims (3)

A digital subscriber calling signal processing method of a remote subscriber module of a switching system for matching a remote subscriber module and a switch mother station by a link, When the digital subscriber picks up the telephone receiver of the telephone and requests a call setup to the ASP by formatting the RSMP in accordance with the LAPD protocol when a call is requested; Connecting a channel between the telephone of the digital subscriber and the called subscriber of the home country when the call establishment request is made; Connecting the channel and sending a call progress notification message from the ASP to RSMP to translate the called number to connect the call; Digital subscriber call processing method in the remote subscriber module of the all-electronic exchange, characterized in that the call is made when the incoming subscriber hooks off when the call is connected to answer the call. The method of claim 1, A method of processing a digital subscriber call in a remote subscriber module of an electronic switchgear, further comprising releasing the allocated channel and ending the call at the end of a call. In the digital subscriber incoming signal processing method of the remote subscriber module of the switching system for matching the remote subscriber module and the exchange mother station by link, The process of establishing a call when there is a request for setting up an incoming call from the home country; Sending a notification message during a call to the home station after setting up the call; Digital subscriber call processing method in the remote subscriber module of the all-electronic exchange, characterized in that the process of forming the call by connecting the channel and receiving a connection confirmation message from the mother station.